Is there any brush you can clean slide out from ground ?

I agree with DutchmanSport. I feel the only way you can be sure you won't "suck in" a small branch, pine cone, etc. that may damage a seal is a visual inspection. That being said, I have often wondered about the practice of using a piece of carpet, with a rope on each side to "scrub" the slide top with a back and forth motion. If anybody has done this and then visually checked it's effectiveness over time please chime in.

Hope this does not become a slide topper vs. non topper discussion. Safe travels.